Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Electric plant:
In service	$ 9,404,774	$ 9,394,112
Right-of-use assets—finance leases	302,732	302,732
Less: Accumulated provision for depreciation	(5,146,724)	(4,968,294)
Net in service	4,560,782	4,728,550
Nuclear fuel, at amortized cost	364,270	358,728
Construction work in progress	6,281,164	5,783,579
Total electric plant	11,206,216	10,870,857
Investments and funds:
Nuclear decommissioning trust fund	641,459	598,181
Investment in associated companies	73,099	74,844
Long-term investments	621,377	518,065
Restricted investments	131,576	306,601
Bond purchase fund	245,605	0
Other	30,014	29,189
Total investments and funds	1,743,130	1,526,880
Current assets:
Cash and cash equivalents	399,551	405,511
Restricted short-term investments	246,709	180,986
Receivables	186,532	152,466
Inventories, at average cost	266,630	280,289
Prepayments and other current assets	48,165	33,839
Total current assets	1,147,587	1,053,091
Deferred charges:
Regulatory assets	803,584	731,438
Prepayments to Georgia Power	33,265	37,601
Other	34,432	20,289
Total deferred charges	871,281	789,328
Total assets	14,968,214	14,240,156
Capitalization:
Patronage capital and membership fees	1,111,745	1,072,642
Long-term debt	10,623,536	10,298,385
Obligation under finance leases	65,207	68,876
Other	27,269	26,861
Total capitalization	11,827,757	11,466,764
Current liabilities:
Long-term debt and finance leases due within one year	269,602	208,649
Short-term borrowings	589,965	383,498
Accounts payable	125,230	162,249
Accrued interest	74,053	72,434
Member power bill prepayments, current	36,148	46,068
Other current liabilities	50,515	68,932
Total current liabilities	1,145,513	941,830
Deferred credits and other liabilities:
Asset retirement obligations	1,160,030	1,135,983
Member power bill prepayments, non-current	88,851	98,113
Regulatory liabilities	722,972	566,399
Other	23,091	31,067
Total deferred credits and other liabilities	1,994,944	1,831,562
Total equity and liabilities	$ 14,968,214	$ 14,240,156